Pneumatic cleaner.



C. A. KILLIES.

PNEUMATIC CLEANER. APPLICATION FILED 00129. 1913.

1 9 1 @5, U3. Patented May 30, 1916.

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PNEUMATIC CLEANER.

APPLICATION FILED OCT. 29, 1913.

Patent-ed May 30, 1916.

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PNEUMATIC CLEANER.

Specification of Letters Patent.

Patented May so, rare.

A Application filed October 29, 1913. Serial No. 798,114.

, pertains to make and use the same.

This invention contemplates improve ments in pneumatic cleaners of the vacuum or suction type, and relates more particularly to those which are especially adapted for removing dust and dirt from carpets, rugs, floors et cetera.

One of the objects of the invention is to provide a pneumatic cleaner of this nature which shall be of extremely simple construe tion, cheap to manufacture, efiicient and easy of operation.

The invention also aims to provide a pneumatic cleaner having a plurality ofbellows arranged in pairs and novel means for connecting the bellows of each pair, so that one bellows will operatethe other.

Assa further object, theinvention contemplates novel means for securing the dust collecting bag in position and novel means for causing air to be sucked through the chamber in which the bag is positioned, and consequently through the bag itself.

"With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain'novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed. 1

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a side elevation of my improved cleaner with the cover shown partly broken away and partly in section, Fig. 2 is a transverse sectional view taken on the plane of line 2-2 of Fig. 1, Fig. 3 is a vertical longitudinal sectional view taken on the plane of line 5-5 of Fig. 3 with the cover shown in position, Fig. is a fragmentary bottom plan view showlng the nozzle, and Fig. 5 is a fragmentary perspective view thereto so as to hold the baglopen.

frame is held against movement within the showing the dust collecting bag and frame therefor.

Referring in detail to the drawings by numerals, 1 designates as an entirety the base of the cleaner, which is in the form of a rectangular casing having a bottom 2, a top 3, side walls 4 and end walls 5 and 6. A vertical partition 7 extends transversely of the casing l and forms therein a suction cham-- ber 8 which is closed at one end by the wall 6. This wall is held in position by means of the pins 9 which project longitudinally from the top and bottom of the casing and which fit into sockets formed in the removable wall 6. To hold the wall 6 in engagement with the pins, I provide a pair of contractile helical springs 10 which are secured at their forward ends to the extremities of the removable wall and to theirrear ends to clips 11 and connected to the side walls 4: of the casing. I

A dust or dirt collecting bag 12 is removably positioned within the suction chamber 8 and has its open end opposed to the wall 6. A rectangular frame 13 surrounds the open end of the bag and is permanently secured This suction chamber by engaging the flat metal springs 14 secured to the underside of the casing wall 3, and the springs 15 secured to the forward edges of the stop blocks16. The

springs 14: hold the frame in close engagement with the bottom 2 of the casing, and the springs 15 force the frame into close engagementwitli the wall 6.

Air enters the bag 12 and slots 18 and 19 which are formed in the bottom 2 and frame 13 respectively. This nozzle preferably consists of'a wooden filler 20 and a metallic covering therefor, designated 21. This nozzle extends transversely of the casing and is secured to the bottom v,thereof adjacent the forward edge, as best shown in Fig. 5, and is provided with an air passage 22 which registers with the passages 18 and 19. In Fig. 2-it will be seen that the openings 18, 19 and 22 provide an upwardly converging channel or passage into the dust bag. The concave lower face of the nozzle is adapted to bear against the surface to be cleaned and thereby assist in supporting the machine.

To draw air through the dust bag, I emthrough a nozzle 17 ploy a plurality of bellows, here shown as four in number, connected in pairs and designated-by the numerals 23, 24, 25 and 26.

Each bellows comprises a flexible portion 27, which is preferably formed of leather, and

a pair of leaves 28 and 29, the former being rigidly secured to the top of the casing, and the latter being'free to move. The top 3 ofthe casing is formed with openings 30 whichcommunicate with the/suction cham-.

ber 8, and the leaves 28 of the bellows are formed with ports 31 which register with the openings 30. Flap valves 32 aresecured within the bellows to permit air toente'r through the ports,'but not allow air to escape therethrough. The air passes from the As before stated, the bellows are connected in pairs and this is accomplished by means of the angular bars 36. Two of these bars are employed, one for each pair of bellows, and they are secured to the outer side edges of the leaves 29. These bars are so shaped that when one of the bellows collapses, the other will expand, and this is best shown in Fig. 1. The inner ends of the leaves 29 are held against movement away from the leaves 28 by means of the leather portions 29 of the bellows, and since the fixed ends of the bellows of each pair are opposed to one another, it is not necessary to provide pivots for the bars 36.

1 The rear end of the cleaner is supported by the preferably rubber tired wheels 37 and 38 which are rigidly connected to an axle 39 that revolves in bearings 40 secured to the upper side ofthe bottom 2 of the casing 1.- These wheels turn through openings 41 formed in the bottom of the casing-and are employed to operate the bellows by means of connecting rods or pitmen 42 which are eccentrically connected to the outer side of the wheels 37 and 38 and to the leaves. 29 of the bellows 23 and 26. The connection of one of the rods 42 to its actuating wheel is diametrically opposed to the connection to the other rod 42 and its actuating wheel, and therefore the bellows 23 is expanded as the bellows 26 is collapsed.

A cover 43 is secured to the topof the easing for the purposeof concealing and protecting the bellows. The machine may be moved from place to place by means of a handle, indicated by the numeral 44 and connected to brackets 45 secured to the top 'wall remove the bag for cleaning or other purposes, the wall 6 is sprung from engagement with the pins 9, and the frame 13 is then drawn from the suction chamber, carrying with it the dust bag.

' lVhile I have shown and described the preferred'embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the scope and spirit of the invention as claimed.

Having thus described my invention, I claim A pneumatic cleaner including a casing provided with a suction chamber open at one end, a closure for the open end of said chamber, means securing the closure in applied position, the bottom wall of the chamber having an air inlet slot and the top wall an air outlet opening, a bag having one end,

open, said bagbeing located in the chamber with its open end opposed to the closure, :1 frame secured to the open end of the bag to hold said end open, the bottom member of said frame having an air inlet slot registering with the slot in said bottom wall, a spring engaging the frame to hold it against said closure, and a spring engaging the frame to hold said bottom member against said bottom wall.

In testimony whereof I afiix my signature in presence of two witnesses.

CHAS. A. KILLIES.

Witnesses:

ALEX HARTMANN', MARY HARTMANN. 

